Which preposition to use with emotionalism

in Occurrences 2%

Plato thus examines the popular contention that the study of poetry educates the moral character of a man, and still maintaining that it should be a moral force for good, demonstrates to his own satisfaction that it fails to have the supposed beneficial effect because it is three removes from truth, and because it encourages unrestrained emotionalism in conduct.

of Occurrences 2%

But for the moment when the enemy retreated to the Aisne, the fear which had been like a black pall over the spirit of Paris, lifted as though a great wind had blown it away, and the people revealed a sane, strong spirit of courage and confidence and patience, amazing to those who still believed in the frivolity and nervousness and unsteady emotionalism of the Parisian population.

Which preposition to use with  emotionalism